Lymph nodes are small structures that filter lymphatic fluid & contain white blood cells. They are part of our immune system & help to fight infections. When inflamed they can feel sore to the touch.
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2

Much more is needed-:
-larger on both sides? Painful, age, node tender or just there? Also any co-morbidities. All is important 2 even hazard a guess. Best 2 C Ur PCP, 4 a hands on exam & history taken.
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5

Monitoring Centers:
Lymphatic system absorbs/carries things too big to go into the arteries/veins like bacteria eaten by white cells and digested food. Lymph nodes "taste" the lymph for anything bad like bacteria/viruses/cancers, etc. When it detects a problem, it alerts the immune system and your body reacts. They enlarge in response to the inflammation they create when they react. They shrink when all is well.
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8

You need help:
Dental abscess will not repair itself. Call your dentist before infection gets worse. Sinus infection, nasal congestion, etc, is a medical, not a dental, issue. Make appointment w your physician. Swollen glands may be due to either or both. You need help...Please make the necessary appointments.
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9

Infection:
Your lymph nodes are a line of defense against infection and sometimes allergic reactions in your body. When they swell, they are fighting the infection. In your case, they are probably overworked and probably need the assistance of an antibiotic. If they do not respond to treatment, blood tests may be helpful to determine other causes.
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10

Lymphadenopathy:
Lymphadenopathy or enlarged lymph nodes in adults should be evaluated, particularly if nodes are felt above the collar bone. Please see your doctor for evaluation as soon as possible.
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11

See doctor:
You need to talk to your doctor about this especially if it has been present for more than a couple of weeks. I am concerned about the stiff neck which may signal meningitis. Blood tests do not detect all infections especially those in isolated areas.
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12

Don't worry:
It's common at age 16 to have enlarged lymph nodes- you have an active immune system. The lymph nodes at the base of your skull in back are occipital lymph nodes. They get big from viral infections, particularly mononucleosis. If these wax and wane in size, don't worry. If they stay big, see a doctor. Rarely 16-year-olds get lymphoma. I don't think your itchy scalp is related; dandruff?
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13

Inflammatory nodes.:
Most nodes in neck that represent a metastatic process are found along the jugular vein. Nodes at the nape of the neck usually drain the scalp and as such with scalp problems, this would be the cause of the process and almost always represent inflammation. This can be controlled with warm soaks to the scalp and at times antibiotics.
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14

Pls see your doc:
Although your signs suggest an inflammatory process with secondary lymphadenopathy, you have to see an oncologist to rule out metastasis, malignancies and endocrine neurological effect of a head and neck growth. Pls take time this week to get checked, perhaps get serology and other tests to get to the cause, even a lymph node work up for lymphoma. Take care.
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15

Depends:
You really should be seen by your md. The symptoms described could be associated witha number of ailments. It is likely a viral infection, but not necessarily. Your age and your description would lead me to test for mononucleosis (epstein-barr virus), but any number of infections can present with your symptoms. See your doctor soon. Good luck!
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16

Lesion in sinus:
Large mass in nasal passage may be due to a lesion in the adjacent maxillary sinus. A lesion here sits right under the orbit and could cause eye problems. If malignant may also have spread to cervical nodes. CAT scan of head and neck region followed by biopsy of the nasal growth can define the nature of the growth and extent of sinus involvement defining what treatment is needed.
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18

Salivary Gland stone:
You may have either an infection of the salivary gland on the right side (submandibular gland) or may be a stone blocking the duct of the gland. It probably swells when you eat and then goes down as the saliva passes the obstruction. See an ENT physician to check your salivary glands.
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